| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_BROWSER_METRICS_METRICS_SERVICE_ACCESSOR_H_ |
| #define CHROME_BROWSER_METRICS_METRICS_SERVICE_ACCESSOR_H_ |
| |
| #include "base/macros.h" |
| |
| class MetricsServiceObserver; |
| |
| // This class limits and documents access to metrics service helper methods. |
| // These methods are protected so each user has to inherit own program-specific |
| // specialization and enable access there by declaring friends. |
| class MetricsServiceAccessor { |
| protected: |
| // Constructor declared as protected to enable inheritance. Decendants should |
| // disallow instantiation. |
| MetricsServiceAccessor() {} |
| |
| // Registers/unregisters |observer| to receive MetricsLog notifications |
| // from metrics service. |
| static void AddMetricsServiceObserver(MetricsServiceObserver* observer); |
| static void RemoveMetricsServiceObserver(MetricsServiceObserver* observer); |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(MetricsServiceAccessor); |
| }; |
| |
| #endif // CHROME_BROWSER_METRICS_METRICS_SERVICE_ACCESSOR_H_ |